I paid 21.95 for a huge bag of FF ocean mix. For the Nutes. Big Grow 16.95 Big Bloom 12.95 tiger bloom 18.95 those are the prices at my local shop. I think you save like 10% if you buy them in the three pack. Their are also some soluble fertilizer that you feed with every other watering. I think it was 59.99 for the three of them. Check this link out might help you. http://www.foxfarmfertilizer.com/buyfox_consumer_map.html
My hydro shop has 3 pack for 44.95, grow big, big bloom, and tiger bloom. You can find it at your local grow shop or the hundreds of online growshops or ebay.